CN202771872U - Overcurrent protecting element - Google Patents
Overcurrent protecting element Download PDFInfo
- Publication number
- CN202771872U CN202771872U CN 201220431751 CN201220431751U CN202771872U CN 202771872 U CN202771872 U CN 202771872U CN 201220431751 CN201220431751 CN 201220431751 CN 201220431751 U CN201220431751 U CN 201220431751U CN 202771872 U CN202771872 U CN 202771872U
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- horizontal part
- electrode
- protecting element
- over
- vertical component
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Abstract
The utility model discloses an overcurrent protecting element which comprises a positive temperature coefficient (PTC) chip, a first electrode and a second electrode. The PTC chip comprises two electric conducting foils and a PTC material layer stacked between the two electric conducting foils. One end of the first electrode is connected with one electric conducting foil of the PTC chip. The first electrode comprises a first horizontal portion, a second horizontal portion and a bent portion. One end of the second electrode is connected with the other electric conducting foil of the PTC chip. The second electrode comprises a third horizontal portion and a vertical portion. The vertical portion is connected with the third horizontal portion. The bent portion is connected with the first horizontal portion and the second horizontal portion, and the second horizontal portion and the third horizontal portion are arranged on the same plane.
Description
Technical field
The utility model is about a kind of over-current protecting element, particularly has a ptc characteristics (Positive Temperature Coefficient about a kind of; PTC) over-current protecting element.
Background technology
Over-current protecting element is used to protective circuit, makes it avoid damaging because of overheated or the overcurrent of flowing through.Over-current protecting element usually comprises two electrodes and reaches at two interelectrode resistance materials.This resistance material tool ptc characteristics; that is when room temperature the tool low-resistance value, and rise to when having overcurrent to produce on a critical temperature or the circuit when temperature, its resistance value can jump more than thousands of times at once; suppress by this overcurrent and pass through, to reach the purpose of circuit protection.When no longer including the situation of overcurrent after room temperature falls back in temperature or on the circuit, over-current protecting element can return back to low resistance state, and makes again normal running of circuit.
Traditional axle type over-current protecting element as shown in Figure 1, over-current protecting element 20 comprises PTC chip 21, and each connecting electrode 22 and 23 of the upper and lower surface of this PTC chip 21.Electrode 22 and 23 is strip, and extends in the opposite direction, is used for connecting the circuit of wish protection.Although over-current protecting element 20 simple in structure and be easy to make; but when the circuit of wish protection are connected with electrode with are connected the position that connects be positioned at Different Plane or even during orthogonal plane; the electrode 22 of this strip and 23 must cooperate according to the bending of actual state demand, and increases problem and degree of difficulty on making.
Summary of the invention
The purpose of this utility model provides a kind of over-current protecting element, utilizes the change of shape of external electrode, to cooperate the demand on the various different application.
According to the over-current protecting element of the utility model one embodiment, it comprises: a PTC chip, one first electrode and one second electrode.The PTC chip comprises two conductive foils and is stacked at therebetween ptc layer.One end of the first electrode connects a conductive foil of this PTC chip.The first electrode comprises the first horizontal part, the second horizontal part and kink.One end of the second electrode connects another conductive foil of this PTC chip.The second electrode comprises the 3rd horizontal part and vertical component effect.Vertical component effect is connected in the 3rd horizontal part, and this kink connects the first horizontal part and the second horizontal part, and the second horizontal part and the 3rd horizontal position are in same plane.
Among one embodiment, the first electrode and the second electrode extend in the opposite direction from the PTC chip.
Among one embodiment, an end of the first horizontal part connects this conductive foil of this PTC chip, and the other end is connected in kink.
Among one embodiment, an end of the 3rd horizontal part connects this another conductive foil of this PTC chip, and the side of the other end connects this vertical component effect.
Among one embodiment, the 3rd horizontal part comprises a breach, and this breach is close to this vertical component effect.
Among one embodiment, the angle between vertical component effect and the 3rd horizontal part is between 75 ~ 105 degree.
Among one embodiment, the second horizontal part and vertical position are in Different Plane.
By the variation on above-mentioned the first electrode and the second electrode shape; the second horizontal part and the 3rd horizontal part are formed at same plane, and form vertical component effect, except can be in response to the variation on using; also be fit to through heat pressing process, and can further will hang down the resistance value of over-current protecting element.
Description of drawings
Fig. 1 is the schematic diagram of existing over-current protecting element.
Fig. 2 and Fig. 3 illustrate the schematic diagram of the over-current protecting element of the utility model one embodiment.
Fig. 4 illustrates the PTC chip schematic diagram of the over-current protecting element of the utility model one embodiment.
Wherein, description of reference numerals is as follows:
10 over-current protecting elements;
The 11PTC chip;
12 first electrodes;
13 first horizontal parts;
14 second horizontal parts;
15 second electrodes;
16 the 3rd horizontal parts;
17 vertical component effects;
18 breach;
19 kinks;
111 conductive foils;
The 112PTC material layer.
Embodiment
For above and other technology contents of the present utility model, feature and advantage can be become apparent, cited below particularlyly go out related embodiment, and cooperate appended graphicly, be described in detail below:
Fig. 2 and Fig. 3 show the schematic perspective view of the over-current protecting element of the utility model one embodiment, and wherein Fig. 3 is the situation after Fig. 2 overturns up and down.Over-current protecting element 10 comprises PTC chip 11, the first electrode 12 and the second electrode 15.Among one embodiment, PTC chip 11 can comprise two conductive foils 111 and be stacked at therebetween ptc layer 112, as shown in Figure 4.
The first electrode 12 1 ends connect a conductive foil 111 of this PTC chip 11, and the second electrode 15 1 ends connect another conductive foil 111 of this PTC chip 11.The first electrode 12 comprises the first horizontal part 13, the second horizontal part 14 and kink 19, and this kink 19 connects the first horizontal part 13 and the second horizontal part 14.The second electrode 15 comprises the 3rd horizontal part 16 and vertical component effect 17, and vertical component effect 17 is connected in the 3rd horizontal part 16.
Among one embodiment, the first electrode 12 and the second electrode 15 extend in the opposite direction from PTC chip 11, form the element design of similar axle type.
Among one embodiment, an end of the first horizontal part 13 connects this conductive foil 111 of this PTC chip 11, and the other end is connected in kink 19.
Among one embodiment, an end of the 3rd horizontal part 16 connects this another conductive foil 111 of this PTC chip 11, and the side of the other end connects this vertical component effect 17.This second horizontal part 14 and vertical component effect 17 are used for being connected to the circuit of wish protection, as the I/O interface.Because vertical component effect 17 and the second horizontal part 14 adhere to Different Plane separately, therefore can be in response to the demand of different structure designs.When for example being applied to battery of mobile phone, the second horizontal part 14 can be welded in protective circuit module (Protective Circuit Module; PCM), in addition vertical component effect 17 is welded in the battery side, and can saves assembling space.
Among one embodiment, the second horizontal part 14 and the 3rd horizontal part 16 are positioned at same plane.Have the too high problem of resistance value after some over-current protecting element is made, need to carry out hot pressing (hotbar) technique to reduce its resistance value.Refer again to Fig. 2, when the second horizontal part 14 and the 3rd horizontal part 16 were positioned at same plane, the larger area thermal head can press down and contact simultaneously the second horizontal part 14 and the 3rd horizontal part 16, and can exert pressure for 11 heating of PTC chip, to reduce resistance value.
Among one embodiment, the second electrode 15 is made by a metallic plate and is formed, and vertical component effect 17 bends from the 3rd horizontal part 16 after cutting unnecessary part.Because cutting out the relation of vertical component effect 17, the 3rd horizontal part 16 can comprise a breach 18, and these breach 18 these vertical component effects 17 of next-door neighbour are convenient to so more with vertical component effect 17 bendings.Vertical component effect 17 and non-limiting and the 3rd meeting at right angles relation of horizontal part 16, among the embodiment, the angle that vertical component effect 17 and the 3rd horizontal part are 16 is between 75 ~ 105 degree, or 80 ~ 100 degree particularly, the actual demand when arranging in pairs or groups application.
By the variation on above-mentioned the first electrode and the second electrode shape; wherein the second horizontal part and the 3rd horizontal part are formed at same plane, and form vertical component effect, want the better flexible application of protective circuit except providing to be connected to; also be fit to carry out heat pressing process, to reduce the resistance value of element.
Technology contents of the present utility model and technical characterstic have disclosed the technical staff still may be based on teaching of the present utility model and announcement and do all replacement and modifications that does not deviate from the utility model spirit.Therefore, protection range of the present utility model should be not limited to those disclosed embodiments, and should comprise various do not deviate from replacement of the present utility model and modifications, and by the claim scope of applying for a patent contained.
Claims (7)
1. an over-current protecting element is characterized in that, comprises:
One PTC chip comprises two conductive foils and is stacked at therebetween ptc layer;
One first electrode, an end connect a conductive foil of this PTC chip, and this first electrode comprises the first horizontal part, the second horizontal part and kink; And
One second electrode, an end connect another conductive foil of this PTC chip, and the second electrode comprises the 3rd horizontal part and a vertical component effect;
Wherein this vertical component effect is connected in the 3rd horizontal part, and this kink connects the first horizontal part and the second horizontal part, and the second horizontal part and the 3rd horizontal position are in same plane.
2. according to claim 1 over-current protecting element is characterized in that the first electrode and the second electrode extend in the opposite direction from the PTC chip.
3. according to claim 1 over-current protecting element is characterized in that an end of this first horizontal part connects this conductive foil of this PTC chip, and the other end is connected in kink.
4. according to claim 1 over-current protecting element is characterized in that an end of the 3rd horizontal part connects this another conductive foil of this PTC chip, and the side of the other end connects this vertical component effect.
5. according to claim 1 over-current protecting element is characterized in that the 3rd horizontal part comprises a breach, and this breach is close to this vertical component effect.
6. according to claim 1 over-current protecting element is characterized in that, the angle between this vertical component effect and the 3rd horizontal part is between 75 ~ 105 degree.
7. according to claim 1 over-current protecting element is characterized in that this second horizontal part and vertical component effect are in Different Plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220431751 CN202771872U (en) | 2012-08-28 | 2012-08-28 | Overcurrent protecting element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220431751 CN202771872U (en) | 2012-08-28 | 2012-08-28 | Overcurrent protecting element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771872U true CN202771872U (en) | 2013-03-06 |
Family
ID=47778425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220431751 Expired - Fee Related CN202771872U (en) | 2012-08-28 | 2012-08-28 | Overcurrent protecting element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771872U (en) |
-
2012
- 2012-08-28 CN CN 201220431751 patent/CN202771872U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20190828 |